Framing enhanced reality overlays using invisible light emitters

ABSTRACT

A method is provided for overlaying target contents on a physical display area using projected light grid or a grid of light emitters. Information on the target contents is transmitted from the emitters using light to an augmented reality device. The information includes light-based data stream of the target contents and physical coordinates of a frame. The augmented reality device position and display the target contents on an area defined by the frame.

BACKGROUND

The present invention relates generally to the field of computingtechnology, and more particularly to augmented reality technology.

Generally speaking, augmented reality (AR) is a live integration ofcomputer-generated digital information with a physical, real-worldenvironment. The computer-generated digital information includes sound,video, graphics and other data by which the physical, real-worldenvironment is augmented or overlaid. The augmented reality may becategorized as augmented reality 3D viewers, augmented reality browsers,and augmented reality games. Augmented reality is usually implementedwith augmented reality devices, for example, smartphones and tabletswith augmented reality apps.

SUMMARY

In one aspect of the present invention, a method is provided comprising:locating one or more invisible light emitters proximate to a location ofa physical display area; transmitting information of a target content toan augmented reality device using invisible light generated by the oneor more invisible light emitters; responsive to the information of thetarget content, determining by the augmented reality device a portion ofthe target content for displaying on the physical display area; anddisplaying by the augmented reality device the portion of the targetcontent on the physical display area.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is a schematic view of a first embodiment of a system accordingto the present invention;

FIG. 2 is a flowchart depicting an embodiment of a method that may beperformed, at least in part, by the system depicted in FIG. 1; and

FIG. 3 is a schematic view of a machine logic (for example, software)portion of the system depicted in FIG. 1.

DETAILED DESCRIPTION

Embodiments of the present invention recognize the use of invisiblelight emitters to frame enhanced reality overlays. Embodiments of thepresent invention provide transmission of reality overlays/contents asencoded light-based data stream using the invisible light to anaugmented reality device. Embodiments of the present invention providesa determination of content to be displayed in a framed area by theaugmented reality device. The present invention may be a system, amethod, and/or a computer program product. The computer program productmay include a computer readable storage medium (or media) havingcomputer readable program instructions thereon for causing a processorto carry out aspects of the present invention.

The computer readable storage medium can be a tangible device that canretain and store instructions for use by an instruction executiondevice. The computer readable storage medium may be, for example, but isnot limited to, an electronic storage device, a magnetic storage device,an optical storage device, an electromagnetic storage device, asemiconductor storage device, or any suitable combination of theforegoing. A non-exhaustive list of more specific examples of thecomputer readable storage medium includes the following: a portablecomputer diskette, a hard disk, a random access memory (RAM), aread-only memory (ROM), an erasable programmable read-only memory (EPROMor Flash memory), a static random access memory (SRAM), a portablecompact disc read-only memory (CD-ROM), a digital versatile disk (DVD),a memory stick, a floppy disk, a mechanically encoded device such aspunch-cards or raised structures in a groove having instructionsrecorded thereon, and any suitable combination of the foregoing. Acomputer readable storage medium, as used herein, is not to be construedas being transitory signals per se, such as radio waves or other freelypropagating electromagnetic waves, electromagnetic waves propagatingthrough a waveguide or other transmission media (e.g., light pulsespassing through a fiber-optic cable), or electrical signals transmittedthrough a wire.

Computer readable program instructions described herein can bedownloaded to respective computing/processing devices from a computerreadable storage medium, or to an external computer or external storagedevice via a network, for example, the Internet, a local area network, awide area network, and/or a wireless network. The network may comprisecopper transmission cables, optical transmission fibers, wirelesstransmission, routers, firewalls, switches, gateway computers, and/oredge servers. A network adapter card or network interface in eachcomputing/processing device receives computer readable programinstructions from the network, and forwards the computer readableprogram instructions for storage in a computer readable storage mediumwithin the respective computing/processing device.

Computer readable program instructions for carrying out operations ofthe present invention may be assembler instructions,instruction-set-architecture (ISA) instructions, machine instructions,machine dependent instructions, microcode, firmware instructions,state-setting data, or either source code or object code written in anycombination of one or more programming languages, including an objectoriented programming language such as Smalltalk, C++ or the like, andconventional procedural programming languages, such as the “C”programming language or similar programming languages. The computerreadable program instructions may execute entirely on the user'scomputer, partly on the user's computer, as a stand-alone softwarepackage, partly on the user's computer and partly on a remote computer,or entirely on the remote computer or server. In the latter scenario,the remote computer may be connected to the user's computer through anytype of network, including a local area network (LAN) or a wide areanetwork (WAN), or the connection may be made to an external computer(for example, through the Internet using an Internet Service Provider).In some embodiments, electronic circuitry including, for example,programmable logic circuitry, field-programmable gate arrays (FPGA), orprogrammable logic arrays (PLA) may execute the computer readableprogram instructions by utilizing state information of the computerreadable program instructions to personalize the electronic circuitry,in order to perform aspects of the present invention.

Aspects of the present invention are described herein with reference toflowchart illustrations and/or block diagrams of methods, apparatus(systems), and computer program products according to embodiments of theinvention. It will be understood that each block of the flowchartillustrations and/or block diagrams, and combinations of blocks in theflowchart illustrations and/or block diagrams, can be implemented bycomputer readable program instructions.

These computer readable program instructions may be provided to aprocessor of a general purpose computer, special purpose computer, orother programmable data processing apparatus to produce a machine, suchthat the instructions, which execute via the processor of the computeror other programmable data processing apparatus, create means forimplementing the functions/acts specified in the flowchart and/or blockdiagram block or blocks. These computer readable program instructionsmay also be stored in a computer readable storage medium that can directa computer, a programmable data processing apparatus, and/or otherdevices to function in a particular manner, such that the computerreadable storage medium having instructions stored therein comprises anarticle of manufacture, including instructions which implement aspectsof the function/act specified in the flowchart and/or block diagramblock or blocks.

The computer readable program instructions may also be loaded onto acomputer, other programmable data processing apparatus, or other deviceto cause a series of operational steps to be performed on the computer,other programmable apparatus, or other device to produce a computerimplemented process, such that the instructions which execute on thecomputer, other programmable apparatus, or other device implement thefunctions/acts specified in the flowchart and/or block diagram block orblocks.

The flowchart and block diagrams in the Figures illustrate thearchitecture, functionality, and operation of possible implementationsof systems, methods, and computer program products according to variousembodiments of the present invention. In this regard, each block in theflowchart or block diagrams may represent a module, segment, or portionof instructions, which comprises one or more executable instructions forimplementing the specified logical function(s). In some alternativeimplementations, the functions noted in the block may occur out of theorder noted in the Figures. For example, two blocks shown in successionmay, in fact, be executed substantially concurrently, or the blocks maysometimes be executed in the reverse order, depending upon thefunctionality involved. It will also be noted that each block of theblock diagrams and/or flowchart illustration, and combinations of blocksin the block diagrams and/or flowchart illustration, can be implementedby special purpose hardware-based systems that perform the specifiedfunctions, or acts, or carry out combinations of special purposehardware and computer instructions.

The present invention will now be described in detail with reference tothe Figures. FIG. 1 is a functional block diagram illustrating variousportions of networked computers system 100, in accordance with oneembodiment of the present invention, including: augmented realitymanagement sub-system 102; physical display areas 104, 106, 108, 112;augmented reality device 110; invisible light emitter set 111;communication network 114; augmented reality device management computer200; communication unit 202; processor set 204; input/output (I/O)interface set 206; memory device 208; persistent storage device 210;display device 212; external device set 214; random access memory (RAM)devices 230; cache memory device 232; and program 300.

Physical display areas 104, 106, 108, 112 may communicate, by means oftheir respective emitter(s) (such as emitter 111 on physical displayarea, emitters on physical display areas 106, 108, 112 are not shown),with the augmented reality management sub-systems 102 via network 114.Physical display areas 104, 106, 108 112 may communicate, usinginvisible light by means of their respective emitters, with augmentedreality device 110 (such as shown between physical display area 104 andaugmented reality device 110). As used herein, invisible light is lightof a select frequency or range of frequencies that is not visiblyperceptible by a human being. One example of such light frequency rangemay be from about 300 GHz to about 430 THz (the corresponding wavelengthranging from about 700 nm to about 1 mm). Alternatively, physicaldisplay areas 104, 106, 108, 112 may communicate with their respectiveaugmented reality devices. Further, augmented reality devices maycommunicate with the augmented reality management sub-system 102 vianetwork 114.

Sub-system 102 is, in many respects, representative of the variouscomputer sub-system(s) in the present invention. Accordingly, severalportions of sub-system 102 will now be discussed in the followingparagraphs.

Sub-system 102 may be a laptop computer, tablet computer, netbookcomputer, personal computer (PC), a desktop computer, a personal digitalassistant (PDA), a smart phone, or any programmable electronic devicecapable of communicating with the client sub-systems via network 114.Program 300 is a collection of machine readable instructions and/or datathat is used to create, manage, and control certain software functionsthat will be discussed in detail below.

Sub-system 102 is capable of communicating with other computersub-systems via network 114. Network 114 can be, for example, a localarea network (LAN), a wide area network (WAN) such as the Internet, or acombination of the two, and can include wired, wireless, or fiber opticconnections. In general, network 114 can be any combination ofconnections and protocols that will support communications betweenserver and client sub-systems.

Sub-system 102 is shown as a block diagram with many double arrows.These double arrows (no separate reference numerals) represent acommunications fabric, which provides communications between variouscomponents of sub-system 102. This communications fabric can beimplemented with any architecture designed for passing data and/orcontrol information between processors (such as microprocessors,communications and network processors, etc.), system memory, peripheraldevices, and any other hardware component within a system. For example,the communications fabric can be implemented, at least in part, with oneor more buses.

Memory 208 and persistent storage 210 are computer readable storagemedia. In general, memory 208 can include any suitable volatile ornon-volatile computer readable storage media. It is further noted that,now and/or in the near future: (i) external device(s) 214 may be able tosupply, some or all, memory for sub-system 102; and/or (ii) devicesexternal to sub-system 102 may be able to provide memory for sub-system102.

Program 300 is stored in persistent storage 210 for access and/orexecution by one or more of the respective computer processors 204,usually through one or more memories of memory 208. Alternatively, aportion of program 300 may be stored in emitters of physical displayareas 104, 106, 108, and 112. Further, alternatively, a portion ofprogram 300 may be stored in augmented reality devices, such asaugmented reality device 110. Persistent storage 210: (i) is at leastmore persistent than a signal in transit; (ii) stores the program(including its soft logic and/or data), on a tangible medium (such asmagnetic or optical domains); and (iii) is substantially less persistentthan permanent storage. Alternatively, data storage may be morepersistent and/or permanent than the type of storage provided bypersistent storage 210.

Program 300 may include both machine readable and performableinstructions, and/or substantive data (that is, the type of data storedin a database). In this particular embodiment, persistent storage 210includes a magnetic hard disk drive. To name some possible variations,persistent storage 210 may include a solid state hard drive, asemiconductor storage device, read-only memory (ROM), erasableprogrammable read-only memory (EPROM), flash memory, or any othercomputer readable storage media that is capable of storing programinstructions or digital information.

The media used by persistent storage 210 may also be removable. Forexample, a removable hard drive may be used for persistent storage 210.Other examples include optical and magnetic disks, thumb drives, andsmart cards that are inserted into a drive for transfer onto anothercomputer readable storage medium that is also part of persistent storage210.

Communications unit 202, in these examples, provides for communicationswith other data processing systems or devices external to sub-system102. In these examples, communications unit 202 includes one or morenetwork interface cards. Communications unit 202 may providecommunications through the use of either, or both, physical and wirelesscommunications links. Any software modules discussed herein may bedownloaded to a persistent storage device (such as persistent storagedevice 210) through a communications unit (such as communications unit202).

I/O interface set 206 allows for input and output of data with otherdevices that may be connected locally in data communication withcomputer 200. For example, I/O interface set 206 provides a connectionto external device set 214. External device set 214 will typicallyinclude devices such as a keyboard, keypad, a touch screen, and/or someother suitable input device. External device set 214 can also includeportable computer readable storage media such as, for example, thumbdrives, portable optical or magnetic disks, and memory cards. Softwareand data used to practice embodiments of the present invention, forexample, program 300, can be stored on such portable computer readablestorage media. In these embodiments the relevant software may (or maynot) be loaded, in whole or in part, onto persistent storage device 210via I/O interface set 206. I/O interface set 206 also connects in datacommunication with display device 212.

Display device 212 provides a mechanism to display data to a user andmay be, for example, a computer monitor or a smart phone display screen.

The programs described herein are identified based upon the applicationfor which they are implemented in a specific embodiment of the presentinvention. However, it should be appreciated that any particular programnomenclature herein is used merely for convenience, and thus the presentinvention should not be limited to use solely in any specificapplication identified and/or implied by such nomenclature.

Program 300 operates to send a target content that is to be overlaid toan augmented reality device using invisible light. The target content isoverlaid by the augmented reality device on a location defined byinvisible light emitters. Oftentimes, the location is within a physicaldisplay area, as discussed further below. Alternatively, the location isadjacent a physical structure on which the invisible light emitters aremounted. The target content is delivered in such a way that the contentis within the field of vision of the augmented reality content area.

Some embodiments of the present invention recognize the following facts,potential problems and/or potential areas for improvement with respectto the current state of the art: (i) the conventional augmented realitydevices are preloaded with target contents; and/or (ii) multiple usersface challenges seeing a same image on a display area at a samelocation.

With augmented reality, content producers may prefer to send feeds ofdata to overlay on specific areas of the physical world. Examples ofsuch areas of the physical world may include billboards and signs fordynamic and targeted advertising, for example, a series of graphicalimages are overlaid on a display board. Further, content producers maydesire to overlay the data without having a user's augmented realitydisplay device pre-loaded with the data and related information.Further, such scenario becomes more complex when multiple users to seethe image (e.g., advisements) at precisely the same location. Further,size and shape of the overlaid physical area may dynamically changebased on the actual overlaid contents.

Some embodiments of the present invention provide a way to use light ofa select range of frequencies (e.g., light in the infrared range)emitters that transmit light-based data streams in physical areas. Insome such embodiments, these data streams describe physical dimensionsand content information that is picked up by augmented reality devicesto determine what to overlay on top of a physical location. In general,in such embodiments, light of a given frequency that is not visiblyperceptible by humans is used to transmit light-based data streams sothat, at least to an acceptable level, i.e., at or below a threshold, iti) does not affect a person's vision, ii) does not distract from what(e.g., advertisement images) may be physically there, and iii) does notrequire a wireless signal that a receiver needs to listen on.

In some embodiments, the augmented reality devices are stationary whilethe display physical areas are dynamically moving. For example, a userstands on a street corner and a bus drives by. The bus has four emitterson the side to outline a large advertisement area, and the user is ableto see the advertisement (e.g., image, video, etc.) on the area asdictated by the bus emitters. Alternatively, the augmented realitydevices are dynamically moving while the physical display areas arestationary. For example, a user wears an augmented reality device andrides in a car driving by a billboard. The billboard has emittersoutlining the billboard area and the augmented reality device displaythe advertisement (e.g., image, video, etc.) to the user. Further,alternatively, both the augmented reality devices and the physicaldisplay areas are dynamically moving with or without certain relativemovement relationship. For example, by combining the above two examples,a user can be in a moving car wearing an augmented reality device andobserve a virtual advertisement provided by emitters on a bus movingpast the user. One skilled in the art recognizes that there are manypossible methods that may be implemented to determine i) the relativeposition of a user to the emitters and ii) the relative changes betweenthe position of the emitters and the user. For example, using changes inthe determined distances between the user and two different emitters,iterative triangulation may be employed to determine a series ofpositions of the user relative to the emitters, from which the rate ofchange for that position may be derived. As such, the displayedadvertisement is dynamically oriented such that it is viewable by theuser as the car and bus pass within a range of distance of one another.

FIG. 2 shows flowchart 250 depicting a first method according to thepresent invention. FIG. 3 shows program 300 for performing at least someof the method steps of flowchart 250. This method and associatedsoftware will now be discussed, over the course of the followingparagraphs, with extensive reference to FIG. 2 (for the method stepblocks) and FIG. 3 (for the software blocks).

Processing begins at step S255, where emitter location module (“mod”)305 locates one or more emitters on or near a location of a physicaldisplay area. In this example, emitter 114 is placed or installed on aposition of physical display area 104, for example, a corner of physicaldisplay area 104. Alternatively, more than one emitter may be installedin a preferred order and/or positions on the physical display area 104.Further, one or more emitters (not shown in FIG. 1) may be positioned onphysical display areas 106, 108, 112. The physical display areas 104,106, 108 and 112 can be any physical surface, including, but are notlimited to, billboards, shopping mall boutique windows (such astransparent display windows), traffic signs, and exterior buildingwalls.

Processing proceeds to step S260, where information transmission module310 transmits information of a target content to an augmented realitydevice. The transmission is performed using invisible light by the oneor more emitters. The information includes physical coordinates of aframe defining a display area for the target content on the physicaldisplay area. In this example, emitter 114 encodes the target contentusing invisible light (such as, infrared) and sends the encodedlight-based data stream to augmented reality device 110. The augmentedreality device may include an infrared camera and/or any other suitablesub-system device to catch and receive the invisible light-based datastream. The target content may be encoded with an invisible light usingany suitable encoding method or algorithm such as varying the lightintensity by modulating the amplitude of the invisible light.Alternatively, the target content may be encoded by strobing the light(i.e., flashing on and off) to represent a basic binary transmission.

The target content is either actual content data that will be overlaid,such as a video or a still image, or metadata including a URL (uniformresource locator) from which an augmented reality device may connect toaccess additional content. The information including physicalcoordinates of the frame and the target content may be programmed byprogram 300 through network 114.

Alternatively, one or more emitters on physical display areas 106, 108,and 112 may transmit invisible light-based data streams to augmentedreality device 110. Alternatively, one or more emitters on physicaldisplay areas 106, 108, and 112 may transmit invisible light-based datastreams to their respective augmented reality device (not shown in FIG.1). Processing proceeds to step S265, where content determination module315 determines by the augmented reality device a preferred portion ofthe target content for displaying on the defined display area. In thisexample, the augmented reality device 110 determines where and what tooverlay the physical display area 104. The physical coordinates of thefame are used to determine the precise position and physical dimensionof the defined display area on the physical display area 104. In ascenario where metadata such as a URL is transmitted instead of actualcontent data, the augmented reality device 110 will connect with network114 to load automatically an appropriate web page with furtherinformation. With this further information, the augmented reality device110 determines what to overlay/display (such as a video or image).

Processing proceeds to stop at step S270, where content display module320 position and display using the information by the augmented realitydevice the preferred portion on the defined display area. In thisexample, after determination in step S265, the augmented reality device110 uses the information to position and display the content on top ofphysical space, i.e., the display area defined by the physicalcoordinates of the fame.

In some embodiments of the present invention, multiple invisible lightemitters are placed on a physical display area, each emitterrepresenting a distinct point in a frame. An example is four emittersthat represent the four corners of a frame. In one such scenario andembodiment, the physical coordinates of a defined display area on whichthe target content will be overlaid is derived by the physical locationof the four emitters. In one example and embodiment, to transmit thecontent information, a fifth emitter configured to transmit the contentdata is placed within the frame of the other four emitters. In anotherexample and embodiment, to transmit the content information, all fouremitters are configured to transmit the content data.

Some embodiments of the present invention may include one, or more, ofthe following features, characteristics and/or advantages: (i) invisiblelight used to encode and transmit content data; (ii) the physical imageson a display board are not affected visibly, as seen by a human; and/or(iii), a wireless signal is not required for an augmented reality deviceto receive the content to be overlaid.

Some helpful definitions follow:

Present invention: should not be taken as an absolute indication thatthe subject matter described by the term “present invention” is coveredby either the claims as they are filed, or by the claims that mayeventually issue after patent prosecution; while the term “presentinvention” is used to help the reader to get a general feel for whichdisclosures herein that are believed as maybe being new, thisunderstanding, as indicated by use of the term “present invention,” istentative and provisional and subject to change over the course ofpatent prosecution as relevant information is developed and as theclaims are potentially amended.

Embodiment: see definition of “present invention” above—similar cautionsapply to the term “embodiment.”

and/or: inclusive or; for example, A, B “and/or” C means that at leastone of A or B or C is true and applicable.

Computer: any device with significant data processing and/or machinereadable instruction reading capabilities including, but not limited to:desktop computers, mainframe computers, laptop computers,field-programmable gate array (FPGA) based devices, smart phones,personal digital assistants (PDAs), body-mounted or inserted computers,embedded device style computers, application-specific integrated circuit(ASIC) based devices.

What is claimed is:
 1. A method for framing enhanced reality overlaysusing invisible light emitters for augmented reality advertisement, themethod comprising: locating, by one or more processors, one or morelight emitters proximate to a location of a physical display area;transmitting, by the one or more processors, information of a targetcontent to an augmented reality device using light generated by the oneor more light emitters, wherein the information includes a light-baseddata stream of the target content and the target content is notpre-loaded, wherein the physical display area communicates with theaugmented reality device using invisible light; responsive to theinformation of the target content, determining, by the one or moreprocessors, a portion of the target content for displaying on thephysical display area by an owner of the physical display area; anddisplaying, by the one or more processors, the portion of the targetcontent on the physical display area, wherein light emitted by the oneor more light emitters includes a light-based data stream that isencoded as part of light from the one or more light emitters bymodulating an amplitude of that light; wherein the one or more lightemitters emit invisible light.
 2. The method of claim 1, wherein thetransmitted information includes physical coordinates of a framedefining a display area for the target content on the physical displayarea.
 3. The method of claim 2, wherein the display area defined by theframe is less than or equal to the physical display area.
 4. The methodof claim 2, wherein the portion of the target content is positioned anddisplayed on the display area defined by the frame.
 5. The method ofclaim 1, wherein the augmented reality device includes a camera toreceive the light emitted by the one or more light emitters.
 6. Themethod of claim 1, wherein light emitted by the one or more lightemitters is infrared light.
 7. The method of claim 1, wherein thephysical display area is a member of the group consisting of: abillboard, a traffic sign, a shopping mall boutique window, and anexterior building wall.
 8. The method of claim 1, wherein the targetcontent includes a uniform resource locator (URL) from which theaugmented reality device retrieves additional content.
 9. The method ofclaim 1, wherein the portion of the target content is a member of thegroup consisting of: a video and a still image.
 10. A system for framingenhanced reality overlays using invisible light emitters for augmentedreality advertisement, the system comprising: one or more invisiblelight emitters; an augmented reality device; a physical display area;and a computer; wherein the one or more light emitters are proximate tothe physical display area; and the computer includes: a processor set;and a non-transitory computer readable storage medium; wherein: theprocessor set is structured, located, connected, and/or programmed torun program instructions stored on the non-transitory computer readablestorage medium; and the program instructions which, when executed by theprocessor set, cause the processor set to: locate the one or more lightemitters proximate to a location of the physical display area; transmitinformation of a target content to the augmented reality device usinglight generated by the one or more emitters, wherein the informationincludes a light-based data stream of the target content and the targetcontent is not pre-loaded, wherein the physical display areacommunicates with the augmented reality device using invisible light;responsive to the information of the target content, determine a portionof the target content for displaying on the physical display area by anowner of the physical display area; and display the portion of thetarget content on the physical display area, wherein light emitted bythe one or more light emitters includes a light-based data stream thatis encoded as part of light from the one or more light emitters bymodulating an amplitude of that light; wherein the one or more lightemitters emit invisible light.
 11. The system of claim 10, wherein theinformation includes physical coordinates of a frame defining a displayarea for the target content on the physical display area.
 12. The systemof claim 11, wherein the portion of the target content is positioned anddisplayed on the display arear defined by the frame.
 13. The system ofclaim 10, wherein the augmented reality device includes an infraredcamera to receive light emitted by the one or more light emitters. 14.The system of claim 10, wherein light emitted by the one or more lightemitters is infrared light.
 15. A computer program product comprising anon-transitory computer readable storage medium having stored a set ofinstructions stored therein which, when executed by a processor, causesthe processor to: locate one or more light emitters proximate a locationof a physical display area; transmit information of a target content toan augmented reality device using light generated by the one or moreemitters, wherein the information includes a light-based data stream ofthe target content and the target content is not pre-loaded, wherein thephysical display area communicates with the augmented reality deviceusing invisible light; responsive to the information of the targetcontent, determine a portion of the target content for displaying on thephysical display area by an owner of the physical display area; anddisplay by the augmented reality device the portion of the targetcontent on the physical display area, wherein light emitted by the oneor more light emitters includes a light-based data stream that isencoded as part of light from the one or more light emitters bymodulating an amplitude of that light; wherein the one or more lightemitters emit invisible light.
 16. The computer program product of claim15, wherein the physical display area is a member of the groupconsisting of: a billboard, a traffic sign, a shopping mall boutiquewindow, and an exterior building wall.
 17. The computer program productof claim 15, wherein the target content includes a uniform resourcelocator (URL) from which the augmented reality device retrievesadditional content.
 18. The method of claim 1, wherein the informationof the target content is displayed advertisement and the displayedadvertisement is dynamically oriented such that it uses changes in thedetermined distances between the user and two different emitters,wherein iterative triangulation is employed to determine a series ofpositions of the user relative to the emitters.
 19. The method of claim1, wherein the corresponding wavelength of the emitted light ranges from700 nm to 1 mm.